When Aonghus found the lake,there were many beautiful swans on it. They all looked so similar. Aonghus heard a song coming form across the lake.It was the song Cear had sung in his dreams.He called to her and asked her to marry him. Caer agreed, but only if he too would become a swan for a while.He agreed,and changed into a swan.Together,ther flew three times around the lake,and then flew to Newgrange,where after some time they turned back into humans and lived happily ever after.